Ear bud



FIG. 1 is a front elevational view of an ear bud showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof.

Broken lines showing on the drawing disclosure are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an ear bud, as shown and described. 